H2H data updated: 2026-09-12 00:00 UTC

Mona Guerrant vs Kazuko Sawamatsu H2H: 1-3

Kazuko Sawamatsu holds a 3–1 lead over Mona Guerrant in their WTA head-to-head. Across 4 main-draw meetings, they are tied 1–1 on clay, while Kazuko Sawamatsu leads 2–0 on grass. Most recently, Mona Guerrant won the 1975 Westchester round of 16 6-3 6-3.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Mona Guerrant
USA Age 77 Right-Handed
H2H
1 – 3
4 main-draw meetings
Kazuko Sawamatsu
JPN Age 75 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Mona Guerrant 6-3 6-3 Kazuko Sawamatsu Match data Aug 23, 1975* R16 Westchester WTA 250 Clay
Kazuko Sawamatsu 6-2 6-0 Mona Guerrant Match data Dec 27, 1974* R32 Australian Open Grand Slam Grass
Kazuko Sawamatsu 7-6 6-1 Mona Guerrant Match data Dec 13, 1974* R16 Perth WTA 250 Grass
Kazuko Sawamatsu 6-3 6-1 Mona Guerrant Match data May 24, 1973* R64 Roland Garros Grand Slam Clay

Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.

Career Comparison

Player Current Peak Pts Elo W L Win % GS 1000 including documented historical predecessor categories Finals 500 including documented historical predecessor categories 250 including documented historical predecessor categories Titles
Mona Guerrant — — — 1,941 122 116 51.3% 0 0 0 0 3 3
Kazuko Sawamatsu — — — 1,954 179 100 64.2% 0 0 0 1 8 9

Career Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.

Age Mona Guerrant Kazuko Sawamatsu
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1968 9–7 56.2% — 1,556 0 0
18 — — — — — — — 1969 16–8 66.7% — 1,674 0 1
19 — — — — — — — 1970 10–8 55.6% — 1,727 0 2
20 1969 1–1 50.0% — 1,500 0 0 1971 18–10 64.3% — 1,826 0 3
21 1970 1–2 33.3% — 1,504 0 0 1972 28–16 63.6% — 1,848 0 6
22 1971 3–8 27.3% — 1,517 0 0 1973 38–21 64.4% — 1,825 0 6
23 1972 28–22 56.0% — 1,733 0 1 1974 37–20 64.9% — 1,900 0 8
24 1973 17–19 47.2% — 1,780 0 2 1975 23–10 69.7% — 1,954 0 9
25 1974 12–14 46.2% — 1,779 0 2 — — — — — — —
26 1975 12–12 50.0% — 1,905 0 2 — — — — — — —
27 1976 15–14 51.7% — 1,898 0 2 — — — — — — —
28 1977 14–9 60.9% — 1,890 0 2 — — — — — — —
29 1978 5–11 31.2% — 1,808 0 2 — — — — — — —
31 1980 14–4 77.8% — 1,812 0 3 — — — — — — —

Surface Results by Age

Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.

Age Mona Guerrant Kazuko Sawamatsu
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
17 — — — — — — — — — — — — — — — — — 1968 — — — — 9 5 14 64.3% 0 2 2 0.0% — — — —
18 — — — — — — — — — — — — — — — — — 1969 — — — — 13 6 19 68.4% 3 2 5 60.0% — — — —
19 — — — — — — — — — — — — — — — — — 1970 — — — — 3 4 7 42.9% 4 4 8 50.0% — — — —
20 1969 — — — — 1 1 2 50.0% — — — — — — — — 1971 — — — — 4 4 8 50.0% 14 6 20 70.0% — — — —
21 1970 — — — — 1 2 3 33.3% — — — — — — — — 1972 1 1 2 50.0% 11 7 18 61.1% 13 8 21 61.9% 3 0 3 100.0%
22 1971 0 2 2 0.0% 2 2 4 50.0% 1 4 5 20.0% — — — — 1973 3 1 4 75.0% 18 8 26 69.2% 16 9 25 64.0% 1 3 4 25.0%
23 1972 4 3 7 57.1% 9 8 17 52.9% 14 9 23 60.9% 1 1 2 50.0% 1974 6 1 7 85.7% 11 9 20 55.0% 17 9 26 65.4% 3 1 4 75.0%
24 1973 3 4 7 42.9% 7 7 14 50.0% 2 4 6 33.3% 5 4 9 55.6% 1975 — — — — 19 7 26 73.1% 4 3 7 57.1% — — — —
25 1974 1 2 3 33.3% 0 3 3 0.0% 5 5 10 50.0% 6 4 10 60.0% — — — — — — — — — — — — — — — — —
26 1975 4 4 8 50.0% 3 2 5 60.0% 1 1 2 50.0% 4 5 9 44.4% — — — — — — — — — — — — — — — — —
27 1976 2 3 5 40.0% 0 1 1 0.0% 5 2 7 71.4% 8 8 16 50.0% — — — — — — — — — — — — — — — — —
28 1977 2 2 4 50.0% 6 3 9 66.7% 4 2 6 66.7% 2 2 4 50.0% — — — — — — — — — — — — — — — — —
29 1978 — — — — 2 2 4 50.0% 0 2 2 0.0% 3 7 10 30.0% — — — — — — — — — — — — — — — — —
31 1980 0 1 1 0.0% — — — — — — — — 2 1 3 66.7% — — — — — — — — — — — — — — — — —
Career — 16 21 37 43.2% 31 31 62 50.0% 32 29 61 52.5% 31 32 63 49.2% — 10 3 13 76.9% 88 50 138 63.8% 71 43 114 62.3% 7 4 11 63.6%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.

Age Mona Guerrant Kazuko Sawamatsu
Yr Elo P+ Serve+ Return+ PD TPW% Hard Elo Clay Elo Grass Elo Set Win % Set Margin Dec. Set Tiebreak Pressure+ Schedule Yr Elo P+ Serve+ Return+ PD TPW% Hard Elo Clay Elo Grass Elo Set Win % Set Margin Dec. Set Tiebreak Pressure+ Schedule
17 — — — — — — — — — — — — — — — — 1968 1556 119.1 — — — — — +59 — 56.3% +0.87 2–0 — — +0.07
18 — — — — — — — — — — — — — — — — 1969 1674 127.4 — — — — — +49 -122 64.7% +1.25 2–1 (67%) — — +0.72
19 — — — — — — — — — — — — — — — — 1970 1727 133.7 — — — — — -29 -107 59.1% +0.75 2–6 (25%) — — -1.68
20 1969 1500 92.5 — — — — — — — 40.0% -2.40 1–0 — — +0.28 1971 1827 139.8 — — — — — -118 0 59.3% +0.81 6–1 (86%) 1–0 — -2.27
21 1970 1504 106.4 — — — — — +14 — 42.9% -1.00 0–1 — — +0.10 1972 1848 149.8 — — — — -200 -59 +3 61.1% +1.22 5–4 (56%) — — -3.87
22 1971 1517 118.6 — — — — — +38 +14 35.7% -0.75 2–4 (33%) 0–3 (0%) 95.8 0.00 1973 1826 145.5 — — — — -160 +61 +45 60.9% +0.99 10–5 (67%) 3–4 (43%) 104.0 +1.60
23 1972 1734 136.4 — — — — -121 -79 -58 56.3% +0.56 8–11 (42%) 5–0 (100%) 103.8 +0.32 1974 1900 150.9 — — — — -79 -49 +35 61.7% +0.94 8–2 (80%) 4–3 (57%) 106.4 -3.51
24 1973 1781 144.7 — — — — -54 -77 -115 48.8% -0.15 3–5 (38%) 2–2 (50%) 99.8 -3.77 1975 1955 150.1 — — — — — +26 -50 64.9% +1.09 6–2 (75%) 3–1 (75%) 106.5 -0.94
25 1974 1779 137.0 — — — — -26 -97 -75 50.9% +0.11 1–4 (20%) 3–4 (43%) 97.1 -1.56 — — — — — — — — — — — — — — — —
26 1975 1906 154.1 — — — — -52 -116 — 48.2% -0.13 5–3 (63%) 2–4 (33%) 103.0 -3.85 — — — — — — — — — — — — — — — —
27 1976 1898 149.2 — — — — -30 — -110 55.9% +0.57 2–8 (20%) 2–5 (29%) 93.6 -2.51 — — — — — — — — — — — — — — — —
28 1977 1890 136.0 — — — — -64 -47 -93 57.7% +0.69 4–4 (50%) 3–1 (75%) 100.8 -0.54 — — — — — — — — — — — — — — — —
29 1978 1809 135.5 — — — — -44 -17 — 35.9% -0.87 3–4 (43%) 0–3 (0%) — -2.29 — — — — — — — — — — — — — — — —
31 1980 1812 138.2 — — — — -108 — — 73.8% +2.26 4–2 (67%) 1–0 — +0.36 — — — — — — — — — — — — — — — —
Career — 1942 149.0 — — — — -53 -61 -71 52.5% +0.27 33–46 (42%) 18–22 (45%) 98.6 -5.68 — 1955 150.4 — — — — -131 +6 +3 61.3% +1.01 41–21 (66%) 11–8 (58%) 110.7 -3.61

Career Rivalries

Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.